What should you know about full leg cast for broken ankle?

A cast may extend from the toes toward the thigh when the fracture needs control of the ankle and the joints above it. It limits movement and protects the injured area, but it can also make walking, bathing, and sleeping more difficult. The cast may be changed after swelling settles, and some people are told not to put weight through it. The decision depends on fracture location, alignment, skin condition, swelling, and whether the ankle is stable.

Pain and swelling can remain after the cast is applied. Elevating the leg and moving the toes, when allowed, can support comfort and circulation. A cast does not replace scheduled examinations or imaging.

Keep the cast dry and never place objects inside it to scratch the skin. Use crutches, a frame, or another aid exactly as demonstrated, and ask how much weight is allowed. Check the toes for colour, warmth, movement, and sensation. Keep the leg raised above heart level during periods of swelling if your clinician permits. Do not trim, loosen, or pad the cast yourself. Attend review appointments so the fracture and cast fit can be checked.

Get urgent advice if toes become blue, pale, cold, numb, or difficult to move, or if pain and tightness do not improve with elevation. Contact the fracture team for a cracked, wet, foul-smelling, or rubbing cast. Seek immediate care for chest pain, sudden breathlessness, or new severe calf pain or swelling.

Ask how much weight you may place on the leg, how to use stairs, when the cast may be removed or changed, and which exercises are safe. Clarify bathing arrangements, pain medicine instructions, the next imaging review, and whether a boot or surgery could become appropriate if alignment changes.